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December Weather in Barro, Brazil

Last updated: August 22, 2025

In December, the average temperature in Barro, Brazil reaches a warm 30°C (86°F). Expect nights to cool down to a minimum of 23°C (73°F), while daytime highs can soar to 39°C (102°F). With an average humidity of 59% and precipitation of 30 mm (1.2 in) spread over just 4 days, this month offers a mix of warmth and occasional showers.

December Temperature in Barro

In December in Barro, the average temperature is 30°C (86°F), with maximums reaching up to 39°C (102°F) and minimums dropping as low as 23°C (73°F). This means travelers can expect warm and sunny weather, ideal for beach outings and outdoor adventures.

December Weather in Barro: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Barro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Barro, December typically has an average temperature of 30°C (86°F), with highs reaching up to 39°C (102°F) and lows dropping to around 23°C (73°F).
JanFebMarAprMayJunJulAugSepOctNovDec848281808080808285878786
Data source: Temperature data for Barro generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Barro

In Barro in December, the precipitation amount is 30 mm (1.2 in) over the course of 4 days.

December Precipitation Trends in Barro

The chart displays monthly precipitation patterns in Barro, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Barro, December typically receives around 30 mm (1.2 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec72150187141481315114730
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Barro

In Barro in December humidity is 59%. With an average temperature of 30°C (86°F), this humidity feels like a warm embrace that can make outdoor activities a bit sticky, so travelers should stay hydrated and take frequent breaks in the shade to enjoy their adventures comfortably.

December Average Humidity in Barro

This chart illustrates the average monthly humidity levels in Barro, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Barro is approximately 59%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%91%92%92%89%80%70%65%59%53%49%59%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Barro

In Barro in December, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Barro, you can check here.

Maximum UV Index Levels in Barro for December

The chart shows the monthly maximum UV Index (UVI) for Barro in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Barro typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141415141211111213131414
Data source: Barro December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How December Weather in Barro Compares to Other Months

Weather in Barro varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Barro, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Barro, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather29°C (84°F)72 mm (2.8 inches)88%extreme
February Weather28°C (82°F)150 mm (5.9 inches)91%extreme
March Weather27°C (81°F)187 mm (7.3 inches)92%extreme
April Weather27°C (80°F)141 mm (5.6 inches)92%extreme
May Weather27°C (80°F)48 mm (1.9 inches)89%extreme
June Weather27°C (81°F)13 mm (0.5 inches)80%extreme
July Weather27°C (80°F)15 mm (0.6 inches)70%extreme
August Weather28°C (83°F)1 mm (0.0 inches)65%extreme
September Weather29°C (85°F)1 mm (0.0 inches)59%extreme
October Weather31°C (87°F)4 mm (0.1 inches)53%extreme
November Weather31°C (88°F)7 mm (0.3 inches)49%extreme
December Weather30°C (86°F)30 mm (1.2 inches)59%extreme

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